Granted Patent
Utility
US 5,221,164 · App. 07/923,650
Positive rake insert having serrations for cutting
Inventor:
Paul Allaire
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Aug 3, 1992
Inventor
Paul Allaire
Assignee (at issue)
GTE Valenite Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.